|
|
|
09-04-2014, 11:52 AM | #1 |
First Lieutenant
40
Rep 326
Posts
Drives: '11 MT E82
Join Date: May 2014
Location: Bay Area
|
Just installed aFe Machforce axleback - have an issue
Hi all,
Last night I removed the stock muffler and installed the aFe machforce xp axleback. Installation was really easy, hardest part was getting those damn rubber hangers off. Finished install in <1 hour. Anyway, overall sounds great though I have one issue which I will get to... It's quite a bit louder than stock (which isn't saying much obviously), most noticeable at <3500 rpms. There is also more gurgle which is always nice. My issue is that whenever I hit ~4k rpms there is a weird horn/whistle sound (similar to videos I've seen of the Berk street though not nearly as bad). The rest of the exhaust is stock, only have replaced the axleback. Does anyone know why this happens and if there is a way I can fix it? Thanks! |
09-05-2014, 09:49 AM | #3 |
Lieutenant
99
Rep 566
Posts |
I have a berk street and have a similar sounds. It sort of sounds like a tire screeching sound or air blowing through a straw. I was going to check my connection to see if the gasket is leaking.
|
Appreciate
0
|
09-05-2014, 11:52 AM | #4 |
First Lieutenant
40
Rep 326
Posts
Drives: '11 MT E82
Join Date: May 2014
Location: Bay Area
|
|
Appreciate
0
|
09-05-2014, 12:14 PM | #5 |
First Lieutenant
12
Rep 324
Posts |
The "y" tip is what causes the whistle - where it splits from one pipe into the two pipes at the exhaust tip - same as the berk experiences sometimes.
__________________
LSXOCET - 404rwhp @ 1600 lbs curb weight... bonkers fast
|
Appreciate
0
|
09-05-2014, 05:24 PM | #6 |
First Lieutenant
40
Rep 326
Posts
Drives: '11 MT E82
Join Date: May 2014
Location: Bay Area
|
|
Appreciate
0
|
09-05-2014, 05:27 PM | #7 |
First Lieutenant
12
Rep 324
Posts |
what happens is they get weld slag on the inside where the Y is made, and that acts as a whistle.
__________________
LSXOCET - 404rwhp @ 1600 lbs curb weight... bonkers fast
|
Appreciate
0
|
09-09-2014, 10:17 AM | #8 |
First Lieutenant
40
Rep 326
Posts
Drives: '11 MT E82
Join Date: May 2014
Location: Bay Area
|
|
Appreciate
0
|
09-09-2014, 12:30 PM | #9 |
First Lieutenant
12
Rep 324
Posts |
Sure isn't. Replace the tip with a single or try your luck with another split tip.
__________________
LSXOCET - 404rwhp @ 1600 lbs curb weight... bonkers fast
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|